Estimating Reliability from a Single Administration of a Mastery Test.

Subkoviak, Michael J.

A number of different definitions and indices of reliability for mastery tests have recently been proposed in an attempt to cope with possible lack of score variability that attenuates traditional coefficients. One promising index that has been suggested is the proportion of students in a group that are consistently assigned to the same mastery state across two testings. The present paper proposes a single test administration method of obtaining such an estimate. (Author)